1. a large musical instrument similar to a piano.
2. a mass of tissue(a mass of cells) working together for a common goal. multiple organs are parts of systems. ie: digestive system, made up of the organs: esaphogus, stomach, intestine.

1) A piano-like instrument, commonly found in churches.
2) A mass of tissue, (No, not Puffs, you dumbass.) bunched together and whatnot. Didn't you pay attention in Life Science?
3) Slang term for a guy's manhood.

...no examples for 1 and 2, but:

"It's nice to have roses on your piano,
but nicer to have tulips on your organ."

pronounced: OR-gan; like "organic" without the "ic" a subspecies of the population that can be described in no other fashion; these individuals have very strange and specific qualifications; often included in this group are those who shop at Whole Foods, drive Jettas, congregate at Starbucks, have black-rimmed glasses, are vegan, are tree huggers, are feminist, have dreadlocks, make their own clothes, enjoy anything having to do with hemp or henna, write poetry, relate entirely to Alanis Morisette, are obsessed with recycling and conserving energy, and other earthy qualities; as an adjective, can be described as "organic"